I've been contemplating getting a pith helmet (from here). Personally, I think it'd look quite good, and it's practical: strong, yet lightweight; provides lots of shade; can be soaked in water to cool the head, but doesn't loose its toughness.

Besides, I can always pretend I'm on safari; I might as well be! The students here are animals, and the dorms are jungles, so I might as well go whole hog and get a safari shirt, a machete, and a khaki kilt (and, of course, a loyal native guide/servant/friend who wears a fez and gives wise, but cryptic advice)!

What think ye?